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Poster communications

Charge state breeding of radioactive ions with an electron cyclotron resonance ion source at TRIUMF

Abstract : Efficient primary ion sources at ISOL facilities like ISAC at TRIUMF normally produce singly charged ions. This limits the usable mass range for post-acceleration due to the limited A/q acceptance of the first acceleration step. At TRIUMF an A/q around 6 is desirable to avoid further stripping. Thus, charge state breeding is necessary if higher masses are to be accelerated. A 14 GHZ ECR "PHOENIX" booster from Pantechnik has been chosen as a breeder due to its high efficiency in producing intermediate A/q values. It has been set-up at a test bench. The singly charged ions are produced from an ion source mounted in a standard ISAC target-ion-source set-up. The aim of the measurements at the test bench is to find optimum conditions compatible with ISAC operation for the charge state booster and the injection and extraction ion optics. Working with radioactive ions always means that the system should aim for high efficiency, as the production of such species is limited. Therefore, special emphasis has to be put on the highest yield for the production of the desired charge state. A second point is the extracted beam quality which determines the quality of the following mass separation and transport efficiency. This will help to reduce the background due to neighboring high intensity A/q values or scattered ions in the beam lines. Additionally, as access to the source at its final destination in a highly radioactive environment will be limited, stable operation is essential. First results on the optimization of the ion optics and the charge breeding will be presented.
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Poster communications
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http://hal.in2p3.fr/in2p3-00025477
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Submitted on : Tuesday, January 24, 2006 - 11:10:31 AM
Last modification on : Monday, July 20, 2020 - 9:18:29 AM

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F. Ames, R. Baartman, P. Bricault, K. Jayamanna, M. Mcdonald, et al.. Charge state breeding of radioactive ions with an electron cyclotron resonance ion source at TRIUMF. 11th International Conference on Ion Sources (ICIS'05), Sep 2005, Caen, France. 77, pp.03B103, 2006, ⟨10.1063/1.2165271⟩. ⟨in2p3-00025477⟩

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